decennial
/dɪˈsenjəl/adjective
1- recurring every ten years十年一度的：
the decennial census.
十年一度的人口普查。
1.1
- lasting for or relating to a period of ten years十年期的：
decennial insurance.
十年期保险。
派生词
decennially
adverb词源
mid 17th cent.: from Latin decennium 'a decade', from decennis of ten years （from decem 'ten' + annus 'year'）, + -AL.